Connected: An Internet Encyclopedia
RFC 1122 - 4.2.1 INTRODUCTION

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### 4.2.1 INTRODUCTION

The Transmission Control Protocol TCP [TCP:1] is the primary virtual-circuit transport protocol for the Internet suite. TCP provides reliable, in-sequence delivery of a full-duplex stream of octets (8-bit bytes). TCP is used by those applications needing reliable, connection-oriented transport service, e.g., mail (SMTP), file transfer (FTP), and virtual terminal service (Telnet); requirements for these application-layer protocols are described in [INTRO:1].

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Connected: An Internet Encyclopedia
RFC 1122 - 4.2.1 INTRODUCTION